碳板火切端面裂纹原因分析及改进对策  

Cause Analysis and Improvement Measures of Cracks on Flame Cutting Surface of Carbon Plate

作　　者：问亚岗 Wen Yagang(Fujian Sansteel Minguang Co.,Ltd.,Sanming 365000,Fujian)

机构地区：[1]福建三钢闽光股份公司,福建三明365000

出　　处：《福建冶金》2022年第3期48-50,共3页Fujian Metallurgy

摘　　要：本文针对碳板火切端面发生裂纹的问题,结合国内某中板生产实践经验,对碳板火切端面裂纹的特征及形成机理进行分析,并阐明火切面质量是火切端面产生裂纹的直接原因,而组织局部晶粒粗大是导致火切裂纹扩展的主要诱因。通过优化轧制工艺和提高火切端面光整度等措施,使该问题得到有效解决。Aiming at the problem of cracks on the fire-cut end of the carbon plate,Combined with the practical experience of a certain domestic medium plate production,analyze the characteristics and mechanism of flame cutting cracks,and clarify that the quality of the flame cut surface is the direct cause of the cracks on the flame cut end surface,the local coarse grains of the structure are the main cause of flame cutting crack propagation.By optimizing the rolling process and improving the finish of the flame cutting end face,etc.,makes this problem solved effectively.

关 键 词：碳板 火切裂纹 晶粒粗大 

分 类 号：TG115[金属学及工艺—物理冶金]